User manual HANNA INSTRUMENTS HI 99551

[. . . ] These instruments are in compliance with the directives. FUNCTIONAL DESCRIPTION SPECIFICATIONS HI 99551-00 HI 99551-01 HI 99551-10 HI 99556-00 HI 99556-01 HI 99556-10 Range IR Sensor -10 to 300°C 14 to 572°F -20 to 199. 9°C Range Probe (HI 99556 only) -40 a 150°C -40 a 302°F -40 to 150. 0°C Resolution IR Sensor 1°C 1°F 0. 1°C Resolutio Probe (HI 99556 only) 0. 1°C 1°F 0. 1°C Accuracy IR Sensor ±2% of reading or ±2°C (-00 and -10 models); ±2% of reading or ±3°F (-01 models) Accuracy Probe (HI 99556 only) ±0. 5°C (-20 to 120°C) /±1°F (0 to 250°F); ±0. 5°C / ±1°F +1% reading (outside) Typical EMC Deviation IR Sensor ±1°C ±2°F ±1°C Typical EMC Deviation Probe (HI 99556 only) ±0. 5°C ±1°F ±0. 5 °C IR Sensor Response Time 1 second Optic Coefficient 3:1 (distance/target diameter) Minimum Distance 30 mm (1. 2'') Emissivity 0. 95 (fixed) Wave Length 6 a 14 µm Probe HI 765PW (included) (HI 99556 only) Battery Type 1 x 9V alkaline (IEC 6LR61) Battery Life approx. 150 hours of continuous use Environment 0 to 50°C (32 to 122°F); RH max 95% Dimensions 143 x 80 x 38 mm (5. 6 x 3. 2 x 1. 5") Weight 320 g (11. 3 oz. ) PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. If there is any damage, notify your Dealer. [. . . ] Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. GENERAL DESCRIPTION HI 99551 and HI 99556 thermometers employ infrared technology to measure the surface temperature. Infrared measurements are extremely practical with a fast response time, typically around 1 second. Another main advantage is the non-intrusive nature of the measurement, which is particularly attractive in the food industry since it translates itself into substantial savings by leaving products intact, especially those sealed or pre-wrapped. This type of non-intrusive measurement is also useful when the surface temperature is high, for difficult-to-reach places or due to hygiene requirements. Simply point to the product or the spot and hold down the measurement key. The measured value will be immediately displayed on the LCD. If in addition to surface measurement, you must check the core temperature too, then HI 99556 is the ideal solution: simply attach the external probe to the meter and you will have a 2-in1 infrared-thermistor thermometer. Different models are available, with different temperature ranges. Temperature probe connector (HI 99556 only) 3. IR/CONTACT button to select infrared sensor or external probe (HI 99556 only) 6. Wrist-strap OPERATIONAL GUIDE INFRARED SENSOR MEASUREMENT Switch the instrument on. For HI 99556 models, check that the instrument is in IR (infrared) mode. If necessary (a "P" tag appears on the LCD to indicate "external probe mode"), press the IR/CONTACT button to switch to IR (infrared) measurement mode. To measure the temperature of an object, simply aim the sensor in the direction of the object. EMISSIVITY The instruments measure the temperature of objects with an emissivity of 0. 95, which is the characteristic of most substances, such as organic material, water, plastic, fabrics, etc. To measure substances that have a polished surface and are very reflective, the emissivity needs to be compensated. It is advisable to cover the object with black paint or black adhesive tape to compensate for the reflectivity. WARNING To avoid damage, do not hold the sensor too close to a heat source for a long period. SENSOR CLEANING To maintain the instrument's accuracy, it is important that the sensor lens is kept clean. [. . . ] To avoid damage or burns, do not perform any measurement in microwave ovens. Dip the probe in the substance which to be measured (an immersion level of approximately 4 cm is recommended), and wait for the reading to stabilize. For example, if the sensor is 15 cm away from the object, the instrument measures the temperature of an area with a 5 cm diameter. LOW BATTERY These instruments continuously check the battery status. [. . . ]